Mark de Wever e0441d587b
[libc++][chono] Use hidden friends for leap_second comparison. (#104713)
The function

    template<class Duration>
requires three_way_comparable_with<sys_seconds, sys_time<Duration>>
constexpr auto operator<=>(const leap_second& x, const
sys_time<Duration>& y) noexcept;

Has a recursive constrained. This caused an infinite loop in GCC and is
now hit by https://github.com/llvm/llvm-project/pull/102857.

A fix would be to make this function a hidden friend, this solution is
propsed in LWG4139.

For consistency all comparisons are made hidden friends. Since the issue
causes compilation failures no additional test are needed.

Fixes: https://github.com/llvm/llvm-project/issues/104700
2024-08-20 19:13:27 +02:00
..
2023-08-10 18:44:19 -07:00